[PATCH 2/2] Bluetooth: btusb: Add reset_resume function
From: Laura Abbott <hidden>
Date: 2015-06-02 01:15:14
Also in:
linux-bluetooth, lkml
Subsystem:
bluetooth drivers, the rest · Maintainers:
Marcel Holtmann, Luiz Augusto von Dentz, Linus Torvalds
Some USB hubs may lose power across suspend/resume. Add a reset_resume callback to properly reset those bluetoot devices. Signed-off-by: Laura Abbott <labbott-rxtnV0ftBwyoClj4AeEUq9i2O/JbrIOy@public.gmane.org> --- Now the setup function is called again with the HCI_RESET_RESUME flag set. The various functions could then use that RESET_RESUME flag to determine if loading the firmware is appropriate or not. --- drivers/bluetooth/btusb.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 3c10d4d..34884cf 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c@@ -3382,6 +3382,21 @@ done: return err; } + +static int btusb_reset_resume(struct usb_interface *intf) +{ + struct btusb_data *data = usb_get_intfdata(intf); + struct hci_dev *hdev = data->hdev; + int ret; + + BT_DBG("intf %p", intf); + + ret = btusb_resume(intf); + if (ret) + return ret; + + return hci_reset_resume_dev(hdev); +} #endif static struct usb_driver btusb_driver = {
@@ -3391,6 +3406,7 @@ static struct usb_driver btusb_driver = { #ifdef CONFIG_PM .suspend = btusb_suspend, .resume = btusb_resume, + .reset_resume = btusb_reset_resume, #endif .id_table = btusb_table, .supports_autosuspend = 1,
--
2.4.1
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